class Student(object):
    """docstring for Student"""
    def __init__(self, name, score):
        super(Student, self).__init__()
        self.name = name
        self.score = score

    def print_score(self):
        print(self.score)

    def get_grade(self):
        if(self.score > 90):
            print('A')
        elif(self.score > 80):
            print('B')


bart = Student('John', 88)
lisa = Student('Lisa', 100)

bart.get_grade()
lisa.get_grade()
bart.print_score()
lisa.print_score()

lisa.sex = 'female'
print(lisa.sex)
print(bart.sex)
